Automobile inspection fixture accessories are generally designed with chemical materials or textile fabrics, and have many different characteristics compared to body parts. Due to the characteristics of large size, complex shape and structure, poor rigidity of parts, and many spatial dimensions, it is necessary to compare and measure with testing instruments in order to quickly and accurately evaluate the quality of product parts. At the same time, testing instruments are conducive to discovering problems in the process route of parts and components, and can ensure the continuous improvement of product process routes. Testing instruments play an important role in the smooth production of automobiles. Preliminary discussion is made on the inspection tools for large decorations in automobile production.

Principles of Auto Gage Accessories Design

The design of automobile inspection fixture accessories must have sufficient rigidity, sufficient stability, and sufficient measurement accuracy to ensure the quality of the automobile; the operation should be easy to ensure sufficient measurement efficiency; the structure It should be as simple to use as possible; it should have a good appearance; it should be economical enough to manage vehicle costs and easy to measure and calibrate.

Key Points for Design of Auto Gauge Accessories

The design of auto inspection fixture accessories not only has the commonality of auto parts inspection instruments, but also has its own characteristics. In its structure, it mainly consists of the following parts. Base plate and frame parts, positioning devices, clamping devices, measuring devices, auxiliary devices, etc.

1. Design of bottom plate and rack part

The bottom plate and the frame part are the basic parts of the whole tester, not the working part of the tester, and their stability directly affects the accuracy of the whole tester. The inspection fixtures for large decorations are relatively large, and attention must be paid to the rigidity, processability and stability of the selected materials when designing the base plate and frame structure. At present, cast aluminum materials are used, and ribbed structure or box structure is adopted. Set the inspection and acceptance standards of inspection tools on the base plate so that they can be associated with the coordinates of the car. At the same time, set up a lifting or handling structure and set the coordinate lines of the auto parts on the base plate. The size of the product itself is large, and the design of the base plate cannot too big. cause inconvenience in operation. As long as it prevents the flipped part from coming out of the base plate.

2. Design of positioning device

Auto parts are generally space parts, and their positioning in space plays a decisive role in the accuracy and stability of their detection. There are no real points and lines in actual production, and the "point" and "line" are generally approximated by the unit "surface". The size of one side depends on the size of the product. For large decorations, the configuration state on the inspection tool should be the loading state, so as to avoid the influence of the force state of the flexible body on the inspection results.

3. Design of clamping device

In order to ensure the characteristics of the large decoration itself and the state of the parts on the inspection tool during inspection, after placing the parts on the inspection tool, use the clamping device to make the zero point The positioning surface and the detection tool positioning and clamping device have a certain rigidity. The clamping direction is along the normal direction of the positioning surface. At the same time, there are various types and structures of the clamping device along the two directions. The general principle is to ensure that the clamping parts Under the premise of permitting the inspection part structure, the operation should be as convenient and fast as possible, and standard parts should be used as much as possible.